{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x665837d6d4d47760a66d8a61d4c94bbcc5bafb26882c13fc6dbc2d0ed84090b0",
    "signature": "0x7815f0538d9677233a0f42190eabdfa2de7d31a6eeb2e77a64b1040848beb15721e36ed3545372353ccea4f2f260cf78ae8c3aaa187033d5d92f5c34da3f5d5b1c",
    "signer": "0x23Ba22AD3B91EdadE1Fb5ab3727E3926E8c489bC",
    "userId": "153215616"
  }
}