{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1c3280398c5b853f8338e68a45125f23646ec0be90ece3bf1b6da5375ba74d40",
    "signature": "0xa7fcca0b3044e1131470849f71215174e9fd482e009ffb77404f5c8edd00f8582d37c1a26f117f1347467c69fc833746c39021ed2b7fb15e917dbb08a95a86971b",
    "signer": "0x7eca770aF81b4b53Be52f6783197381Fa9521b1e",
    "userId": "264030906"
  }
}