{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x460f39ebc8bbcde1af56e830bfc892fb16a8cfc4201c6a4e2f01ebcab60b9842",
    "signature": "0xb44b58318552e804bb212f94643fec421fd5db5bd1baf97e551e9e124ca3db5622ef4697e068d64657ce07df3a4b27440639eb4fb85e15f41391deaf80d786751b",
    "signer": "0x26e5edB5490F2Fa4897626dD634f29302117aa7f",
    "userId": "521699858"
  }
}