{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708291620",
    "entityType": "User",
    "nonce": "0x6c00f2b6bf06f11204b7f3241e03c3e193d16b8e4e7e3d91190a1d312de151ea",
    "signature": "0x51c914e04c6a8471afea8bf092d4b38c1993cef623a615b655c26da369cc61b45cfa1df0901c09c65bf56ee7a520e22d84db5cd7beef94721a653a4b747a580c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}