{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90d266886dac24759633be2e155117029e804de9be95050ce72a4dc5db5c7b36",
    "signature": "0x11cc19400ca7f408201c0b118f2319117f223e3697e4a5a5003564f2a3f7f9936826abd6bda539b08da6876579898eb8c57d712dff39e7610974d440376674041c",
    "signer": "0x6f40eFAab3aD8EFfE499C82F1D060e8784231ECC",
    "userId": "635110117"
  }
}