{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748896412",
    "entityType": "User",
    "nonce": "0xa2176d6dd643b01c4b78daba76dc8d862acb69af3ee630196279610bf541191f",
    "signature": "0xd5d77b44addc2e8fc240ca3b2efb0bf2634363466845b68058c05056a1c308777324b3eaef955f849038b3328e61239f429e19d51a990afcf7c0c4107193b11f1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}