{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55875",
    "entityType": "User",
    "nonce": "0xd71a741ffc0e6038b1a92bc02e6bfcf6fb1a65ac12c74e2e49655aa43160f8bf",
    "signature": "0x2c147885779892443286d3cfdd1350c4e4c7d06fe2d3ab0756f96a451e0f48805ef858a3394216d460bb042cfeb9b26e36e1f486e83d1d23aecb7e2934c9e1a91b",
    "signer": "0xf40D844F18ceEb158472fa074B5706946f2bb643",
    "userId": "1721"
  }
}