{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213759",
    "entityType": "User",
    "nonce": "0x591dc61499d7dc44806356af23c183470af54a7f9760f8a864d775c593148c5b",
    "signature": "0xc7623f2dfa8d8a8b33e47a1bcb7dc5e8b26869bd15b01969651a58d3c32d810c2e992578f8bd042c56dd01261f0cfa03dc1412a417a0375cc43a8a0d5d3f65ac1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}