{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0xb1e2a18110f54f0ae9dada7a559e0ce78679c029c4a08980070bcfca6c26b360",
    "signature": "0x0156209be6306b7021e4b5f19faa054da9ddcdc4091a7530877d765996119318084f5b6473b881dd8872865b1827efc97c209f619cd790098920ccba084f4ce51b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}